Bathymetric DEM of the lower Nooksack River, August 2015

Bathymetric data for the mainstem of the Nooksack River during low flow conditions from 24 to 27 August 2015. Depth data were collected with boat-mounted single-beam echo sounder downstream of Ferndale, Washington and a boat-mounted acoustic doppler current profiler (ADCP) upstream of Ferndale. Elevation of the instruments were determined with real-time kinetic global positioning system (RTK GPS). Irregular XYZ points were interpolated to a continuous grid using kriding methods in stream-wise coordinates and extended to the edge of water through the inclusion of points representing zero-depth locations in the kriging process.